Add role helper for user model

[ahmadshah]

Add role checker for user model.

$user = User::find(1);

$user->is('foo'); //check if user has the specified role
$user->isAny(['foo', 'bar']); //check if user has at least one of the roles

$user->isNot('foo'); //check if user does not has the specified role
$user->isNotAny(['foo', 'bar']); //check if user does not has at lease one of the roles

Signed-off-by: ahmadshah ahmadshahhafizan@gmail.com

[coveralls]

Coverage remained the same when pulling 9851c20 on ahmadshah:feature/user-model-helper into 77ea1d3 on orchestral:2.1.

[crynobone]

I don't think this would work since $this->roles() would return the relationship class, and not the result, why not abstract it out to another method.

protected function resolveRolesNameAsList()
{
    return $this->roles()->list('name');
}

[ahmadshah]

Yup apparently it does not work since it is not returning array. Will update the PR

[coveralls]

Coverage remained the same when pulling 9f93772 on ahmadshah:feature/user-model-helper into 77ea1d3 on orchestral:2.1.

[crynobone]

👍 thanks